Revert "Enable running multitests in browsers"

dart/tools/testing/dart/test_suite.dart

Index: dart/tools/testing/dart/test_suite.dart
diff --git a/dart/tools/testing/dart/test_suite.dart b/dart/tools/testing/dart/test_suite.dart
index 5a82931a968417c907f9a07e8b039cc6f2188d85..5f5e4efcaa360373ec23960e9c920440d88bcd38 100644
--- a/dart/tools/testing/dart/test_suite.dart
+++ b/dart/tools/testing/dart/test_suite.dart
@@ -646,6 +646,8 @@ class StandardTestSuite extends TestSuite {
     String testName;
 
     if (optionsFromFile['isMultitest']) {
+      // Multitests do not run on browsers.
+      if (TestUtils.isBrowserRuntime(configuration['runtime'])) return;
       // Multitests are in [build directory]/generated_tests/... .
       // The test name will be '[test filename (no extension)]/[multitest key].
       String name = filePath.filenameWithoutExtension;
@@ -1893,7 +1895,7 @@ class TestUtils {
     return new Path(path);
   }
 
-  /**
+  /** 
    * Gets extra vm options passed to the testing script.
    */
   static List<String> getExtraVmOptions(Map configuration) {